Results 81 to 90 of about 2,365 (223)

A Modified Loss of Synchronism Condition for Efficient Critical Clearing Time (CCT) Estimation in Transient Stability Analysis

open access: yesInternational Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
Accurate determination of critical clearing time (CCT) remains a fundamental challenge in transient stability analysis of power systems, primarily due to the highly nonlinear and complex dynamic behavior of multimachine networks. Existing methods based on the loss of synchronism (LOS) condition often require intensive numerical iterations and may ...
Ardyono Priyadi   +4 more
wiley   +1 more source

Magnetizing Characteristics of Bridge Type Superconducting Fault Current Limiter (SFCL) with Simultaneous Quench Using Flux-Coupling

open access: yesEnergies, 2020
A bridge type superconducting fault current limiter (SFCL) with simultaneous quench using two high-temperature superconducting (HTSC) elements and two coils was fabricated to analyze the fault current limiting characteristics.
Seok-Cheol Ko, Tae-Hee Han, Sung-Hun Lim
doaj   +1 more source

Recent Advances in Design of Fault Current Limiters for Modern Power Grid Networks: A Critical Review

open access: yesJournal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.
Fault current limiters (FCLs) are essential components in modern power systems for critical protection against the damaging effects of fault currents. With extensive short circuits, routine electrical faults, and an increasing risk of failure due to unprecedented events, the development of different types of FCL has gained attention.
Tamalika Chowdhury   +2 more
wiley   +1 more source

Presaturated iron‐core fault current limiters for MVDC power system applications

open access: yesIET Electric Power Applications, Volume 18, Issue 12, Page 1978-1990, December 2024.
This paper presents design and dynamic performance investigation of a 25 kV full‐scale, modular topology (arranged on the sides of a regular hexagon), medium voltage direct current (MVDC) permanent magnet (PM) biased presaturated fault current limiter (PMFCL).
Ibrahim A. Metwally, Mohamed Eladawy
wiley   +1 more source

Sources and Sinks of N in Ecosystem Solutions Along the Water Path Through a Tropical Montane Forest in Ecuador Assessed With δ15N Values of Total Dissolved Nitrogen

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 129, Issue 10, October 2024.
Abstract The globally increasing reactive N richness affects even remote ecosystems such as the tropical montane forests in Ecuador. We tested whether the δ15N values of total dissolved N (TDN), measured directly in solution with a TOC‐IRMS, can be used to help elucidate N sources and sinks along the water path and thus might be suitable for ecosystem ...
Pablo Alvarez   +4 more
wiley   +1 more source

Modeling the limiting performance of resistive superconductor fault current limiters for 2G HTS tape

open access: yesFirat University Journal of Experimental and Computational Engineering, 2022
Fault currents in power systems force valuable power system elements thermally, electro-dynamically and electromagnetically. Due to the increase in fault current levels, the installation of components resistant to fault currents and the damage of these ...
Muhsin Tunay Gençoğlu, Buğra Yılmaz
doaj  

Analysis of Superconducting Fault Current Limiterin DC System with Renewable Energy Sources [PDF]

open access: yes, 2016
Superconducting fault-current limiters (SFCLs) have been the subject of research and development for many years and offer an attractive solution to the problem of rising fault levels in electrical distribution systems.
Ganesh, C. (C)   +2 more
core  

A Comprehensive Review of Low-Voltage-Ride-Through Methods for Fixed-Speed Wind Power Generators [PDF]

open access: yes, 2016
This paper presents a comprehensive review of various techniques employed to enhance the low voltage ride through (LVRT) capability of the fixed-speed induction generators (FSIGs)-based wind turbines (WTs), which has a non-negligible 20% contribution of ...
Guerrero, Josep M.   +2 more
core   +2 more sources

A modified synchronverter for a weak grid with virtual power circles‐based PQ decoupling scheme

open access: yesIET Renewable Power Generation, Volume 18, Issue 14, Page 2723-2736, 26 October 2024.
A VSG is essential for ensuring stability of a power systems with high penetration of renewable energies, weak grid. Its control, however, is challenging due to the coupling of the active and reactive power which thus, requires virtual impedance. This article simplifies what type, kind and magnitude of the virtual impedance required to achieve a ...
Daniel Angelo Kisinga   +2 more
wiley   +1 more source

Impact of key design constraints on fault management strategies for distributed electrical propulsion aircraft [PDF]

open access: yes, 2017
Electrically driven distributed propulsion has been presented as a possible solution to reduce aircraft noise and emissions, despite increasing global levels of air travel.
Flynn, Marie-Claire   +4 more
core   +1 more source

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